Some of the older Bullworker models
Courtesy of Bullworker USA:
Regardless of which model you own, Bullworker works with its isometric principles. There is no minimum compression level for Isometric Exercise because Isometric is based on muscular RESISTANCE, so whether you compress 1cm or 10cm the Bullworker works for you… Guaranteed.
That is the Isometric Principles that deliver Bullworker results.
The real choice today is whether one wants Dual Straps or Single Cables. The current Bullworker model is the Bullworker X-5 Gold (i) is the current strap model and the Steel-Bow (o) is cable model.
The Steel-Bow allows you to change the Spring resistance level with one of 3 easy interchanging springs.


| Model | Name | Compression Distance (cm) | Compression Distance (cm) | Total Compression (Pounds) |
| a | Tensolator | 27 | 10.5" | 105 |
| b | Bullworker 2 | 26 | 10.25" | 95 |
| c | Bullworker | 25 | 10" | 90 |
| d | Macho Power | 24 | 9.5" | 85 |
| e | Bullworker 3 Germany (36") | 29 | 11.5" | 110 |
| f | Bullworker Deluxe UK | 23 | 9" | 100 |
| g | Lady Bullworker | 22 | 8.5" | 45 |
| h | X-5 Coloured | 38 | 15" | 105 |
| i | X-5 Gold | 39 | 15.25" | 105 |
| j | Bullworker Indonesia | 23 | 9.25" | 85 |
| k | Super 4 India | 24 | 9.5" | 100 |
| l | Bullworker 3 India | 25 | 10" | 90 |
| m | Bullworker China | 18 | 7" | 100 |
| n | Steelbow 28 | 18 | 7" | 105 |
| o | Steel-Bow
(Steel-Bow has 3 Springs) |
13 | 5" | #1 25
#2 65 #3 105 |
Bullworker Isometric Information
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